MODE VI. SERPENTINE. 339 



great intervals, accompany their base, following 

 their direction from north to south. There are 

 even some detached branches, which appeal- 

 near Tobolsk, which is not far from those moun- 

 tains. 



" But from thence to the river Amur, that is 

 to say, in a space of about a thousand leagues, 

 scarcely any vestiges are found, in the great 

 chains of Altai, Sayannes, and in the mountains 

 of Daouria. 



" The serpentines most known are those of 

 Sahlberg, in Sweden, and of Zeoblitz, in Saxony, 

 from which vases are turned of every kind, which 

 are spread over Europe *. 



<c The serpentine of Bareith is filled with gar- 

 nets of an irregular form, generally of the size of 

 a pea: they are sprinkled in an equal manner 

 in the mass, and when the stone is polished it 

 presents a very agreeable mixture of spots, of a 

 fine red on a green base. Trinkets and other 

 ornaments are made of it. 



" Saussure has observed several serpentines, in 

 rolled blocks, on the shores of the lake of Ge- 

 neva : they are remarkable by their specific gra- 

 vity, which is greater than that of all other ser- 

 pentines. He saw some soft, and some hard. 



* It is commonly an ollite. 

 Z 2 



